Tycho/Release Notes/0.11

The Tycho 0.11.0 milestone release mainly includes fixes for a long list of bugs.

Additionally, the implementation of eclipse-repository was improved significantly: Instead of just copying artifacts and calling the features and bundles publisher (like in eclipse-repository 0.10, and all versions of eclipse-update-site), the existing p2 metadata of the artifacts is reused. With the "native" p2 data flow implemented in Tycho, two new features could also be added: